1 |
#include <math.h> |
2 |
#include "../config.h" |
3 |
#include "rxvt.h" |
4 |
|
5 |
#if HAVE_IMG |
6 |
|
7 |
rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat) |
8 |
: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat), |
9 |
pm(0), ref(0) |
10 |
{ |
11 |
} |
12 |
|
13 |
rxvt_img::rxvt_img (const rxvt_img &img) |
14 |
: s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), ref(img.ref) |
15 |
{ |
16 |
++ref->cnt; |
17 |
} |
18 |
|
19 |
#if 0 |
20 |
rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap) |
21 |
: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap) |
22 |
{ |
23 |
} |
24 |
#endif |
25 |
|
26 |
rxvt_img * |
27 |
rxvt_img::new_from_root (rxvt_screen *s) |
28 |
{ |
29 |
Display *dpy = s->display->dpy; |
30 |
unsigned int root_pm_w, root_pm_h; |
31 |
Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]); |
32 |
if (root_pixmap == None) |
33 |
root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]); |
34 |
|
35 |
if (root_pixmap == None) |
36 |
return 0; |
37 |
|
38 |
Window wdummy; |
39 |
int idummy; |
40 |
unsigned int udummy; |
41 |
|
42 |
if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy)) |
43 |
return 0; |
44 |
|
45 |
rxvt_img *img = new rxvt_img ( |
46 |
s, |
47 |
XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)), |
48 |
0, |
49 |
0, |
50 |
root_pm_w, |
51 |
root_pm_h |
52 |
); |
53 |
|
54 |
img->pm = root_pixmap; |
55 |
img->ref = new pixref (root_pm_w, root_pm_h); |
56 |
img->ref->ours = false; |
57 |
|
58 |
return img; |
59 |
} |
60 |
|
61 |
rxvt_img * |
62 |
rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
63 |
{ |
64 |
Display *dpy = s->display->dpy; |
65 |
|
66 |
int width = gdk_pixbuf_get_width (pb); |
67 |
int height = gdk_pixbuf_get_height (pb); |
68 |
|
69 |
if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
70 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
71 |
|
72 |
// since we require rgb24/argb32 formats from xrender we assume |
73 |
// that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
74 |
int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24; |
75 |
|
76 |
XImage xi; |
77 |
|
78 |
xi.width = width; |
79 |
xi.height = height; |
80 |
xi.xoffset = 0; |
81 |
xi.format = ZPixmap; |
82 |
xi.byte_order = LSBFirst; // maybe go for host byte order, because servers are usually local? |
83 |
xi.bitmap_unit = 32; //XY only, unused |
84 |
xi.bitmap_bit_order = LSBFirst; //XY only, unused |
85 |
xi.bitmap_pad = BitmapPad (dpy); |
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xi.depth = depth; |
87 |
xi.bytes_per_line = 0; |
88 |
xi.bits_per_pixel = 32; //Z only |
89 |
xi.red_mask = 0x00000000; //Z only, unused |
90 |
xi.green_mask = 0x00000000; //Z only, unused |
91 |
xi.blue_mask = 0x00000000; //Z only, unused |
92 |
xi.obdata = 0; // probably unused |
93 |
|
94 |
if (!XInitImage (&xi)) |
95 |
rxvt_fatal ("unable to initialise ximage, please report.\n"); |
96 |
|
97 |
if (height > INT_MAX / xi.bytes_per_line) |
98 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); |
99 |
|
100 |
xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); |
101 |
|
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int rowstride = gdk_pixbuf_get_rowstride (pb); |
103 |
|
104 |
assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb)); |
105 |
unsigned char *row = gdk_pixbuf_get_pixels (pb); |
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char *line = xi.data; |
107 |
|
108 |
for (int y = 0; y < height; y++) |
109 |
{ |
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unsigned char *src = row; |
111 |
uint32_t *dst = (uint32_t *)line; |
112 |
|
113 |
if (depth == 24) |
114 |
for (int x = 0; x < width; x++) |
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{ |
116 |
uint8_t r = *src++; |
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uint8_t g = *src++; |
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uint8_t b = *src++; |
119 |
|
120 |
uint32_t v = (r << 16) | (g << 8) | b; |
121 |
|
122 |
if (ecb_big_endian ()) |
123 |
v = ecb_bswap32 (v); |
124 |
|
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*dst++ = v; |
126 |
} |
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else |
128 |
for (int x = 0; x < width; x++) |
129 |
{ |
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uint32_t v = *(uint32_t *)src; src += 4; |
131 |
|
132 |
if (ecb_little_endian ()) |
133 |
v = ecb_bswap32 (v); |
134 |
|
135 |
v = ecb_rotr32 (v, 8); |
136 |
|
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*dst++ = v; |
138 |
} |
139 |
|
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row += rowstride; |
141 |
line += xi.bytes_per_line; |
142 |
} |
143 |
|
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rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height); |
145 |
img->alloc (); |
146 |
|
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GC gc = XCreateGC (dpy, img->pm, 0, 0); |
148 |
XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
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XFreeGC (dpy, gc); |
150 |
|
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free (xi.data); |
152 |
|
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return img; |
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} |
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|
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rxvt_img * |
157 |
rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
158 |
{ |
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GError *err = 0; |
160 |
GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
161 |
|
162 |
if (!pb) |
163 |
rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
164 |
|
165 |
rxvt_img *img = new_from_pixbuf (s, pb); |
166 |
|
167 |
g_object_unref (pb); |
168 |
|
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return img; |
170 |
} |
171 |
|
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void |
173 |
rxvt_img::destroy () |
174 |
{ |
175 |
if (--ref->cnt) |
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return; |
177 |
|
178 |
if (pm && ref->ours) |
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XFreePixmap (s->display->dpy, pm); |
180 |
|
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delete ref; |
182 |
} |
183 |
|
184 |
rxvt_img::~rxvt_img () |
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{ |
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destroy (); |
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} |
188 |
|
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void |
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rxvt_img::alloc () |
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{ |
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pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
193 |
ref = new pixref (w, h); |
194 |
} |
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|
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Picture |
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rxvt_img::src_picture () |
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{ |
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Display *dpy = s->display->dpy; |
200 |
|
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XRenderPictureAttributes pa; |
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pa.repeat = repeat; |
203 |
Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
204 |
|
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return pic; |
206 |
} |
207 |
|
208 |
void |
209 |
rxvt_img::unshare () |
210 |
{ |
211 |
if (ref->cnt == 1 && ref->ours) |
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return; |
213 |
|
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//TODO: maybe should reify instead |
215 |
Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); |
216 |
GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
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XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
218 |
XFreeGC (s->display->dpy, gc); |
219 |
|
220 |
destroy (); |
221 |
|
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pm = pm2; |
223 |
ref = new pixref (ref->w, ref->h); |
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} |
225 |
|
226 |
void |
227 |
rxvt_img::fill (const rxvt_color &c) |
228 |
{ |
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XGCValues gcv; |
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gcv.foreground = c; |
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GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); |
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XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); |
233 |
XFreeGC (s->display->dpy, gc); |
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} |
235 |
|
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static void |
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get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) |
238 |
{ |
239 |
double sigma = radius / 2.0; |
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double scale = sqrt (2.0 * M_PI) * sigma; |
241 |
double sum = 0.0; |
242 |
|
243 |
for (int i = 0; i < width; i++) |
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{ |
245 |
double x = i - width / 2; |
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kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
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sum += kernel[i]; |
248 |
} |
249 |
|
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params[0] = XDoubleToFixed (width); |
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params[1] = XDoubleToFixed (1); |
252 |
|
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for (int i = 0; i < width; i++) |
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params[i+2] = XDoubleToFixed (kernel[i] / sum); |
255 |
} |
256 |
|
257 |
rxvt_img * |
258 |
rxvt_img::blur (int rh, int rv) |
259 |
{ |
260 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
261 |
return clone (); |
262 |
|
263 |
Display *dpy = s->display->dpy; |
264 |
int size = max (rh, rv) * 2 + 1; |
265 |
double *kernel = (double *)malloc (size * sizeof (double)); |
266 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
267 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
268 |
img->alloc (); |
269 |
|
270 |
Picture src = src_picture (); |
271 |
|
272 |
XRenderPictureAttributes pa; |
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pa.repeat = RepeatPad; |
274 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa); |
275 |
|
276 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
277 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
278 |
XFreePixmap (dpy, tmp_pm); |
279 |
|
280 |
if (kernel && params) |
281 |
{ |
282 |
size = rh * 2 + 1; |
283 |
get_gaussian_kernel (rh, size, kernel, params); |
284 |
|
285 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
286 |
XRenderComposite (dpy, |
287 |
PictOpSrc, |
288 |
src, |
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None, |
290 |
tmp, |
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0, 0, |
292 |
0, 0, |
293 |
0, 0, |
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w, h); |
295 |
|
296 |
size = rv * 2 + 1; |
297 |
get_gaussian_kernel (rv, size, kernel, params); |
298 |
::swap (params[0], params[1]); |
299 |
|
300 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
301 |
XRenderComposite (dpy, |
302 |
PictOpSrc, |
303 |
tmp, |
304 |
None, |
305 |
dst, |
306 |
0, 0, |
307 |
0, 0, |
308 |
0, 0, |
309 |
w, h); |
310 |
} |
311 |
|
312 |
free (kernel); |
313 |
free (params); |
314 |
XRenderFreePicture (dpy, src); |
315 |
XRenderFreePicture (dpy, dst); |
316 |
XRenderFreePicture (dpy, tmp); |
317 |
|
318 |
return img; |
319 |
} |
320 |
|
321 |
static Picture |
322 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) |
323 |
{ |
324 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
325 |
|
326 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
327 |
XRenderPictureAttributes pa; |
328 |
pa.repeat = True; |
329 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa); |
330 |
|
331 |
XFreePixmap (dpy, pixmap); |
332 |
|
333 |
return mask; |
334 |
} |
335 |
|
336 |
void |
337 |
rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a) |
338 |
{ |
339 |
Display *dpy = s->display->dpy; |
340 |
Picture src = create_xrender_mask (dpy, pm, True); |
341 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
342 |
|
343 |
XRenderColor mask_c; |
344 |
mask_c.red = r; |
345 |
mask_c.green = g; |
346 |
mask_c.blue = b; |
347 |
mask_c.alpha = a; |
348 |
XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); |
349 |
|
350 |
XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
351 |
|
352 |
XRenderFreePicture (dpy, src); |
353 |
XRenderFreePicture (dpy, dst); |
354 |
} |
355 |
|
356 |
void |
357 |
rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a) |
358 |
{ |
359 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) |
360 |
return; |
361 |
|
362 |
Display *dpy = s->display->dpy; |
363 |
Picture src = create_xrender_mask (dpy, pm, True); |
364 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
365 |
|
366 |
XRenderColor mask_c; |
367 |
mask_c.red = r; |
368 |
mask_c.green = g; |
369 |
mask_c.blue = b; |
370 |
mask_c.alpha = a; |
371 |
XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); |
372 |
|
373 |
XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
374 |
|
375 |
XRenderFreePicture (dpy, src); |
376 |
XRenderFreePicture (dpy, dst); |
377 |
} |
378 |
|
379 |
rxvt_img * |
380 |
rxvt_img::clone () |
381 |
{ |
382 |
return new rxvt_img (*this); |
383 |
} |
384 |
|
385 |
static XRenderPictFormat * |
386 |
find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
387 |
{ |
388 |
if (format->direct.alphaMask) |
389 |
return format; // already has alpha |
390 |
|
391 |
// try to find a suitable alpha format, one bit alpha is enough for our purposes |
392 |
if (format->type == PictTypeDirect) |
393 |
for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
394 |
if (f->direct.alphaMask |
395 |
&& f->type == PictTypeDirect |
396 |
&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
397 |
&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
398 |
&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
399 |
return f; |
400 |
|
401 |
// should be a very good fallback |
402 |
return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
403 |
} |
404 |
|
405 |
rxvt_img * |
406 |
rxvt_img::reify () |
407 |
{ |
408 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
409 |
return clone (); |
410 |
|
411 |
Display *dpy = s->display->dpy; |
412 |
|
413 |
bool alpha = !format->direct.alphaMask |
414 |
&& (x || y) |
415 |
&& repeat == RepeatNone; |
416 |
|
417 |
rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
418 |
img->alloc (); |
419 |
|
420 |
Picture src = src_picture (); |
421 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
422 |
|
423 |
if (alpha) |
424 |
{ |
425 |
XRenderColor rc = { 0, 0, 0, 0 }; |
426 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
427 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h); |
428 |
} |
429 |
else |
430 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); |
431 |
|
432 |
XRenderFreePicture (dpy, src); |
433 |
XRenderFreePicture (dpy, dst); |
434 |
|
435 |
return img; |
436 |
} |
437 |
|
438 |
rxvt_img * |
439 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
440 |
{ |
441 |
rxvt_img *img = clone (); |
442 |
|
443 |
img->x += x; |
444 |
img->y += y; |
445 |
|
446 |
if (w != width || h != height) |
447 |
{ |
448 |
img->w = width; |
449 |
img->h = height; |
450 |
|
451 |
rxvt_img *img2 = img->reify (); |
452 |
delete img; |
453 |
img = img2; |
454 |
} |
455 |
|
456 |
return img; |
457 |
} |
458 |
|
459 |
rxvt_img * |
460 |
rxvt_img::transform (int new_width, int new_height, double matrix[9]) |
461 |
{ |
462 |
rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat); |
463 |
img->alloc (); |
464 |
|
465 |
Display *dpy = s->display->dpy; |
466 |
Picture src = src_picture (); |
467 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
468 |
|
469 |
XTransform xfrm; |
470 |
|
471 |
for (int i = 0; i < 3; ++i) |
472 |
for (int j = 0; j < 3; ++j) |
473 |
xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); |
474 |
|
475 |
#if 0 |
476 |
xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO |
477 |
xfrm.matrix [1][2] -= XDoubleToFixed (y); |
478 |
#endif |
479 |
|
480 |
XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
481 |
XRenderSetPictureTransform (dpy, src, &xfrm); |
482 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); |
483 |
|
484 |
XRenderFreePicture (dpy, src); |
485 |
XRenderFreePicture (dpy, dst); |
486 |
|
487 |
return img; |
488 |
} |
489 |
|
490 |
rxvt_img * |
491 |
rxvt_img::scale (int new_width, int new_height) |
492 |
{ |
493 |
if (w == new_width && h == new_height) |
494 |
return clone (); |
495 |
|
496 |
double matrix[9] = { |
497 |
w / (double)new_width, 0, 0, |
498 |
0, h / (double)new_height, 0, |
499 |
0, 0, 1 |
500 |
}; |
501 |
|
502 |
int old_repeat_mode = repeat; |
503 |
repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems |
504 |
|
505 |
rxvt_img *img = transform (new_width, new_height, matrix); |
506 |
|
507 |
repeat = old_repeat_mode; |
508 |
img->repeat = repeat; |
509 |
|
510 |
return img; |
511 |
} |
512 |
|
513 |
rxvt_img * |
514 |
rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi) |
515 |
{ |
516 |
double s = sin (phi); |
517 |
double c = cos (phi); |
518 |
|
519 |
double matrix[9] = { |
520 |
c, -s, -c * x + s * y + x, |
521 |
s, c, -s * x - c * y + y, |
522 |
0, 0, 1 |
523 |
}; |
524 |
|
525 |
return transform (new_width, new_height, matrix); |
526 |
} |
527 |
|
528 |
rxvt_img * |
529 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg) |
530 |
{ |
531 |
if (new_format == format) |
532 |
return clone (); |
533 |
|
534 |
rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
535 |
img->alloc (); |
536 |
|
537 |
Display *dpy = s->display->dpy; |
538 |
Picture src = src_picture (); |
539 |
Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
540 |
int op = PictOpSrc; |
541 |
|
542 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
543 |
{ |
544 |
// does it have to be that complicated |
545 |
rgba c; |
546 |
bg.get (c); |
547 |
|
548 |
XRenderColor rc = { c.r, c.g, c.b, 0xffff }; |
549 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
550 |
|
551 |
op = PictOpOver; |
552 |
} |
553 |
|
554 |
XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
555 |
|
556 |
XRenderFreePicture (dpy, src); |
557 |
XRenderFreePicture (dpy, dst); |
558 |
|
559 |
return img; |
560 |
} |
561 |
|
562 |
rxvt_img * |
563 |
rxvt_img::blend (rxvt_img *img, double factor) |
564 |
{ |
565 |
rxvt_img *img2 = clone (); |
566 |
Display *dpy = s->display->dpy; |
567 |
Picture src = img->src_picture (); |
568 |
Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
569 |
Picture mask = create_xrender_mask (dpy, img->pm, False); |
570 |
|
571 |
XRenderColor mask_c; |
572 |
|
573 |
mask_c.alpha = float_to_component (factor); |
574 |
mask_c.red = |
575 |
mask_c.green = |
576 |
mask_c.blue = 0; |
577 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
578 |
|
579 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
580 |
|
581 |
XRenderFreePicture (dpy, src); |
582 |
XRenderFreePicture (dpy, dst); |
583 |
XRenderFreePicture (dpy, mask); |
584 |
|
585 |
return img2; |
586 |
} |
587 |
|
588 |
#endif |
589 |
|